Work holding and filing device



sept. 2s 1926. 1,601,282

' A. C. ASPER WORK HOLDNG AND FILING DEVICE Filed April 6, 1925 2Sheets-Sheet 1 sept. 2s 1926., 1,601,282

A.C.ASPER WORK HOLDING AND FILNG DEVICE Patented Sept. 28, Y1926.

UNITED. STATES- y 1,601,282 .PATENT oFFIc-E.

ALBERTY C.k ASPER, OF BIRD CITY,.I{ANS.A.S.Y

WORK HOLDING AND FVILING DEVICE.

Application filed August s, 1925. serial No. 48,595.

The invention relates to improvements in devices for holding workwhileaccurately liling the, same, and has reference primarily t a deviceof this 'character which is intended for use. in filing main bearing orconnectingrod caps, to permit ytightening of the bearings.

The principal object of the invention is to provide a device of thecharacter set forth which is simple and inexpensive, may be easilymanipulated, willY permit yany .desired quantity or the cap to be filedoff, and' will insure that the new surface formed by the ling operation,will be in a plane absolutely parallel to the plane previously occupiedby the old surface. :Thus,. a true litting of the cap against thecooperating part of the bearing is insured.

With the foregoing in view, the invention resides in the novel subjectmatter hereinafter fully described and claimed, the description beingsupplemented by the accompanying drawing.

Figure l is a side elevation. l

Figure 2 is a top plan view partly broken away.

Figure 3 is a verticalsectional view Vas indicated by line 8-3 of Figure2.

Figure 4 is a vertical sectional view at right angles to Figure 3, asindicated by line 4--4 'of Figure l.

Figure 5 is a perspective view off the vgauge which is" used ininitially setting vthe device.

The form of construction selec-ted for illustration may be considered asthe preferred construction and while itwill be hereinafter ratherspecifically described, it is to be understood at the outset that withinthe scope or" they invention as claimed, numerous modifications may bemade.

The numeral l designates va base plate which is adapted to be secured,by bolts orv the like 2, to a work bench or other appropriate supportr.This plate le is provided with an annular upstanding flange 4 whoseinner side is screw-threaded for engagement with corresponding threadson another annular flange 5 which projects downwardly from a horizontal,.preferably circular table 6, said table having a central opening 7. Theedge of the table is provided with an appropriate scale. 8, cooperablewith a pointer 9 which, by means of a slot l0 'and screws ll, isadjustable circuinf'erentially of the flange 4, for a purpose to appear.It willbe seen that rotation of the table 6 will cause the coactingscrew threads' ofv the flanges 4 andf, to either'efect raising orlowering of said table, and if desired a set screw o'r the llike l2maybe employed to hold said table in adjusted position.

The central portion of the basey plate 1 is formed on its 'upper sidewith a convex boss 1 3'andl is provided at its lower sidewith a similarboss 14, an opening l5 being formed through said bosses and the centerofthe plate. A ymetal block 16 r` is provided with a concave'lowersurface 17 which rests upon the convex boss 13, the upper side of saidblock being formed Vwith a transverse channely I8 for a purpose toappear. Threaded into or otherwise rigidly secured to the block 16 is adownwardly projecting tubular shank 19, and a hand wheel 20 ors'omeother appropriate form ofl nut is threaded on the lower end of thisshank to engaire the convex boss 14. Vhen this hand wheel or the like isloosened,the shank I9 and'block 16 may be movedinto different angularrelations with the table 6, and tightening of said hand `wheel or thelikey will lock the blockinthe position to which it has been adjusted.The upper end ,of this block supports a pair of laterally spaced rests2l upon which the boltengaging portions 22 of a bearing cap 23 areintended to rest'. Abar 24 is adapted lto lie withinthe bearing cap andits ends are engageable with a pair ofi loops25 whose lower ends areappropriately connected with a cross arm 26,` the latter being pivotedcentrally between its ends atV 27 to 'another shank 28' which passesslidably through the tubular shank 19', a hand wheel or other form ofnut 29 being threaded upon theV lowerv end of' said shank 28 to contactwith the lower end of' the sha1-rk I9 forv the purpose of downwardlypulling the cross arm 2.6, lloops or yokes 25 and bar 24, totightly holdthey bearing 23V upon thel restsI 21. An appropriate spring 30' may beassociated with the shank 28 to raise the latter as the wheel 29 isloosened, permitting the bearing holding means to be readily released. l

A file 31 is provided for ilingA the portions 22 of the bearing cap,said file being provided with guide blocks 32 which are rigid therewith,and are. adaptedl to slidev freely upon the surface of' the table 62'Preferably, the blocks 32 are formed with slots 33 through which thetile 8l passes and inwhieh said file is tightly clamped by thumb screwsor the like. 34.` The lower Walls ofthe'slots 83, against which the fileis held by the screws or the like 34, are of course uni-form distancesfrom the flat lower ends 35 of the blocks '32, so that the lower side ofthe file 3l will at all times be absolutely parallel with the surafce ofthe table 6.

In setting the device for use, the bearing cap 25 is placed upon therest 2l, the bar 2li is engaged with the cap, the yokes 25 are iswungover the ends of said bar 2a, and the wheel or the like is tightened tothus securely hold the cap with respect to the block 16. 'lhe wheel 2l)is now loosened unless this has been previously done, and the work gauge36 is placed over the bearing cap, said gauge comprising a 'hat topplate 3"( and depending legs 36. rlhe table 6 is at this time lowered sothat the legs do not touch it, and the plate 37 rests flatly upon theportions of the bearing The table 6 is now adjusted upwardly and if itis seen that all of the legs 38 will not touch the table top the block16 and associated parts are angularly adjusted to the necessary extentto cause intimate contact of all of said legs with the table top, whilethe plate 3"( is tightly contacting with the portion 22 of the bearingcap. When this relation of parts is attained, the wheei or the like 2Ois tightened. 'this having been done, the pointer 9 is adjusted to tneZero point on the scale 8, which scale is preferably graduated inthousandths of an inch. VBy now downwardly adjusting the table 6 to anydistance necessary, using the scale 8 to determine the extent of thisadjustment the device is in readiness for locking with the set screw orthe like l2, whereupon the filing operation may be started. ljy nowoperating the file Si with the blocks 32 attached, until the lower end35 of said blocks come into Contact with the table 6, the desired amountor" material will be removed from the bearing cap and it is assured thatthe new surface imparted to the cap, is in a plane absolutely parallelwith the plane previously occupied by the old surface, thereby insuringthat the bearing cap shall accurately lit the coacting part of thebearing when it is reapplied to the shaft.

The invention is rather simple and inexpensive, easily operated andproduces exceptionally accurate work. On account of these advantages,the details herein disclosed are preferably followed. However, withinthe scope of the invention as claimed, modifications may be made asabove stated.

l claim:

1. A work clamping and filing device comprising a base, a table having avertical opening therethrough and mounted above vthe base for verticaladjustment with respect thereto, a work holding means beneath the tableat its opening, means to permit angular adjustment of the work- Leonesaholding means relative to the table, and file holding means to slide onthe table.

2. A structure as specified in claim l; together with work clampingmeans yextending downwardly through the work supporting means -andmovable therewith in its adjustment.

A work clamping and filing device comprising a table, means forrholdingthe work to be filed in fixed relation with said table, a fue forengagement with the work, file-holding means uponV the table, and meansfor effecting relative angular adjustment of the table with respect tothe workholding means.

l. A work clamping and filing device comprising a table, work to befiled in fixed relation with said table, a file for engagement with thework, file holding means on the table, means for eii'ecting relativeadjustment of the table and the work holding means to vary the distancebetween the latter and the file, and means for effecting relativeangular adjustment of said table and said work holding means.

5. A work holding and filing device comprising a base, a table abovesaid base and formed with a vertical opening, connecting means betweenthe base and table permitting vertical adjustment of the latter towardand from the former, work supporting and clamping means having a portionpassing through said opening in the table, means between the base andthe last named means to adjust the work angularly relative to the table,a lile for engagement with the work, and guides for said file rigid withrespect thereto and adapted to move freelyover the table. y

' 6. A work-holding and filing device comprising a support having aconvex boss at its upper side and another convex boss at its lower side,said base being formed with an opening passing through said bosses, atable above the base having an opening above the upper boss, connectingmeans between the table and base for 'effecting adjustment of the formertoward and from the latter, work-supaci-tino' means resting on andad'ustable over the surface of said upper boss, said workholding meanshaving a shank passing through said opening of said base and beingprovided with a work-engaging portion rising through the opening"Y ofsaid table, anda clamping nut threaded on the lower end of said shankand engaging said lower convex boss; together with means on the tablefor. guiding the iile used for filing the work.

7. A structure as specified in claim 6; said shank being tubular,work-engaging means for holding the work upon'the worksupporting means,means having a shank passing through saidV tubular shank, and a clamping'nut threaded means for holding the,

said work-engaging on the lower end of said second named shank forbinding engagement with the lower end of the tubular shank.

8. A structure as speciiied in claim 6; said shank being tubular, a barto lie upon the work, a second shank within said tubular shank providedwith yokes iitting over the ends of said bar, and a clamping nutthreaded on the lower end of said second shank to bind against the lowerend of the tubular shank.

9. A work-holding and filing device comprising a base having a convexboss at its upper side, another convex boss at its lower side and anopening through said bosses, a table above the base having an openingover said bosses, connecting means between the table and base permittingvertical adjustment of the former with respect to the latter,work-supporting means including a block having a concave lower sideresting on the upper convex boss, said block being formed in its upperside with a channel and being provided with a downwardly7 projectingtubular shank which passes through the opening of the base, a clampingnut threaded on the lower end of said shank to bind against the lowerconvex boss, a bar to en" gage the work, a second shank within saidtubular shank provided with yokes to engage the ends of said bar, theupper end of said second shank and the lower end of said yokes beingdisposed in said channel, and a clamping nut threaded on the lower endof the second shank to bind against the lower end of the tubular shank.

10. A work-holding and liling device comprising a base place providedwith work holding means at its center and having an upstanding annularflange, a table above said base plate provided with a. depending annularflange having threaded engagement with said upstanding flange, wherebyverl tical adjustment of the table may be effected with'respect to thework supporting means, a file for engagement with the work, and guidingmeans rigid with said iile and adapted for free movement over saidtable.

ll. A work clamping and tiling device comprising a circular base havinga screw threaded portion, a circular table having a central verticalopening and a screw threaded portion to engage the threadedportion thatin the base, an angularly adjustable work holding means in said openingsto hold the work above the table in a Xed position with respect thereto,said work holding means being operable from beneath the base, and fileholding means on the table. In testimony whereof I have hereunto aftlXedmy signature.

ALBERT C. ASPER.

